What if the setinterval delay in JavaScript is one second?

This article will explain in detail what to do about the setinterval delay in JavaScript for one second. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.

When using setinterval, it is found that when it first opens the page, it will be delayed for a second before execution. Because the setinterval timer executes its own one second first, and then manipulates the contents after execution, so that it cannot be displayed immediately.

For example: create a div box, and then write script code

Var div = document.querySelector ('div'); var num= 10; setInterval (function () {if (num==1) {div [XSS _ clean] = null; return fn1 } else {num--; div [XSS _ clean] = 'remaining' + num+' seconds';}}, 1000)

The effect is as shown in the figure:

It will execute that second first, wait a second and then execute what is displayed in it.

Solution:

Call directly

Var div = document.querySelector ('div'); var num= 11; function fn1 () {if (num==1) {div [XSS _ clean] = null; return fn1 } else {num--; div [XSS _ clean] = 'remaining' + num+' seconds';}} setInterval (fn1,1000) Fn1 ()

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